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參數資料
| 型號： | TPS40197RGYR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 520 kHz SWITCHING FREQ-MAX, PQCC16 |
| 封裝： | PLASTIC, MO-241BB, VQFN-16 |
| 文件頁數： | 25/30頁 |
| 文件大小： | 931K |
| 代理商： | TPS40197RGYR |
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TI Information — Selective Disclosure
SLUS886 – NOVEMBER 2008
www.ti.com
ELECTRICAL CHARACTERISTICS
–40°C
≤ TJ ≤ 85°C, VVDD = 12 V, all parameters at zero power dissipation (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOLTAGE REFERENCE AND VID
0.9 V
≤ VVID ≤ 1.2 V, 0°C ≤ TJ ≤ 85°C
–0.5%
0.5%
VFB
FB input voltage
VVID
0.9 V
≤ VVID ≤ 1.2 V, –40°C ≤ TJ ≤ 85°C
–1.0%
1.0%
IVID
VID pull-up current
50
80
120
mA
VVID
VID pull-up voltage
1.60
1.68
1.78
V
tANTI-SKEW
Anti-skew filtering time
300
550
750
ns
(1)
VVIDH
VID high-level input voltage
0.8
1.0
1.3
V
VVIDL
VID low-level input voltage
0.30
0.55
0.70
V
IREF
REF source/sink current
400
650
850
mA
INPUT SUPPLY
Normal input supply voltage
VVDD
4.5
14.0
V
range
VENABLE = 3 V
2.5
4.5
mA
IVDD
Operating current
VENABLE = 0.6 V
45
70
mA
SOFT-START
tSS
Soft-start time
3.3
5.5
7.0
tSSDLY
Soft-start delay time
1.3
2.3
4.0
ms
tREG
Time to regulation
5.0
8.0
11.0
ON-BOARD REGULATOR
VBP
Output voltage
VVDD > 6 V, IBP ≤ 10 mA
5.1
5.3
5.5
V
Regulator dropout voltage
VDO
VVDD >5 V, IBP ≤ 25 mA
350
550
mV
(VVDD–VBP)
ISC
Regulator current limit threshold
50
mA
IBP
Average current
50
OSCILLATOR
fSW
Switching frequency
420
520
600
kHz
VRAMP
(1)
Ramp amplitude
1
V
PWM
DMAX
(1)
Maximum duty cycle
85%
tON(min)
(1)
Minimum controllable pulse
110
HDRV off to LDRV on
50
ns
tDEAD
Output driver dead time
LDRV off to HDRV on
25
ERROR AMPLIFIER
GBWP
(1)
Gain bandwidth product
7
10
MHz
AOL
(1)
Open loop gain
60
dB
Input bias current (current out of
IIB
100
nA
FB pin)
IEAOP
Output source current
VFB = 0 V
1
mA
IEAOM
Output sink current
VFB = 2 V
1
UNDERVOLTAGE LOCKOUT
VUVLO
Turn-on voltage
3.9
4.2
4.4
V
UVLOHYST
Hysteresis
700
850
1000
mV
SHUTDOWN
VIH
High-level input voltage, ENABLE
1.9
3.0
V
VIL
Low-level input voltage, ENABLE
0.6
1.2
(1)
Specified by design. Not production tested.
4
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS40197
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